Speart goes into much greater depth on Newcomer's pursuit of Kojima, as well as on some of the other undercover operations Newcomer was handling at the same time (including a fascinating investigation into the brutal killing of hawks by racing enthusiasts, which would make a book well worth reading in its own right). Supplementing her narrative with some of the evidence collected against Kojima, including saved Skype conversations, emails and other recordings, Speart's account really makes clear just how obsessed Kojima grew with Newcomer over the course of the operation, and how Newcomer was able to put that obsession to good use.
Bringing the story even more up to date, Speart traveled to Kyoto and met Kojima, hearing his "side of the story" and finding herself sized up as a possible accomplice in the continued smuggling of protected butterflies.
In the grand tradition of The Orchid Thief, this journalistic account reads like a good thriller. Speart's done her research on butterfly collecting and smuggling as well as wildlife protection efforts, and it shows. Highly recommended.